19723090

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{27779}}^1$

素因数の和:27857

約数の個数: 16

約数和(自身を含む): 36002880

約数和(自身を除く): 16279790

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 27779, 55558, 138895, 277790, 1972309, 3944618, 9861545, 19723090]

約数ペア:

[(1, 19723090), (2, 9861545), (5, 3944618), (10, 1972309), (71, 277790), (142, 138895), (355, 55558), (710, 27779)]